LMA Laryngeal Mask Airway: I want a Breast Lift with Implants but worried about anesthesia.

Worries about anesthesia complications are legitimate. While rare, the consequences can be tragic. In many ways, local/sedation can be riskier than general since you don't have as effective control of the airway, especially in the event of an emergency. The meds used are typically all very similar amongst the providers and used properly all are appropriate. Explain to your surgeon your concerns so that he/she can adequately answer them.

Generally speaking, anxiety prior to surgery is very normal; its complete elimination is usually not possible. Assuming you have chosen your plastic surgeon carefully, other important "variables" such as anesthesia provider and surgery facility will be selected based on everyone's first priority: safety. This careful selection should give you some peace of mind that you will be safe around the time of surgery. Most patients describe the experience of anesthesia as a "pleasant nap";  assuming you are working with a well experienced plastic surgeon and anesthesiologist, your "wake up" should be smooth, as well as pain and anxiety free.   In my practice I prefer the use of general  anesthesia provided by a well experienced board-certified anesthesiologist. I find the use of this type of anesthesia provides for a safe, comfortable, and immobile patient;  these conditions are important when it comes to achieving optimal outcomes. These days, endotracheal tubes are usually not necessary; an LMA (laryngeal mask airway) device, placed in the mouth (not the trachea), can be used to control the airway (no sore throat).

 
Discuss your specific areas of concerns with your plastic surgeon who will be in the best position to help you calm your nerves.  I ask my patients to try to be as calm as possible prior to surgery; this “calmness" tends to translate to a smoother postoperative course. You may be able to alleviate some pre operative anxiety with music, exercise, meditation, a glass of wine (if ok with your surgeon), and positive/objective focus on the long term outcome/benefits etc. prior to your procedure.
Generally, patients find that they did “get worked up for nothing” after their recovery is completed.
I hope this helps.

The use of an LMA for general anesthesia in any form of breast reshaping surgery is standard today and perfectly safe. It is preferred to an endotracheal tube as it avoids intubation through the vocal cords. I do not think you would find local with sedation as the most comfortable method for the combined procedure of breast implants with a lift.